. >>> coming up a massive explosion rocks mexico city. the problem-plagued site that's left dozens hurt and damage for blocks. >> high-flying high-tech equipment to study the bay area's smoggy skies. who is behind the research and what information they are looking for. >> here's some rainfall information for you. our rainfall deficit for january, 4" below normal in san francisco. more than two for san jose and livermore. looking live outside it's fitting we're wrapping up january on a dry note. when does the rain come back? the answer in your forecast next. >> and the star of the super bowl halftime show takes the stage early. how beyonce quickly drowned out her critics. [ singing live ] at least 14 people are dead and 80 injuried in a massive explosion at mexico's state- owned oil company's headquarters. aerial m the pemex facili >>> 14 people are dead in mexico city and 80 missing. aerial pictures from the pemex facility show lines of fire trucks and emergency vehicles. the local media is reporting exploding machinery as the case of the